Primer



. May l, 1928. 1,668,209

C. H. JORGENSEN ET AL PRIMER Filed March 2l. 1923 Patented May-1, 1.928.

UNITED STA-TES P ATENT 0F FICE;`

- n. JoneENsEN AND PETER JJORGENSEN, or cursado, ILLrNors PRIMER.

' `Application tiled March 21, 1923. Serial No. 626,508.

\ Our invention relates to primers and `has particular reference to a manually `operated priming device forl use in internal combustion Ven ines into which gasolineor otherV cylinders, which has been a common objec- 1 tionto devices of this character heretofore employediwlt. has heretofore been impos sible to secure tight iittinrrparts so that the fuelloil is drawn directly into the engine cylinders andleaks downwardly past the piston rings into the lubricating oil, destroying its value for lubricating purposes and resulting in unnecessary wear ofthe piston rin the scoring of the cylinders and the li e, with theconsequent loss of" power.

It has ,heretofore been impossible to prevent, because 'of improperly Vfitted parts, or because of the lack of proper operation on the part Vof the operatontbefuel oil being drawn directly into the engine cylinders and leaking downwardly past the piston rings into thelubricating oil, destroying its value for lubricating purposesand resulting in unnecesary Wear of the pistons `and piston rings, and the like. Another serious result of an uncontrollable by-passing of gasoline through'a riming device is anunnecessary wastage of uel, as the leakage is not uniform because of the vast differences in the manifold `vacuums ,with open` and closed throttles, l.therefore makin it impossible to maintain i an eflicientas we as a perfect carburetor adjustment atall engine speeds. y y Y These and other objects of our invention will be more fully and better understoodby reference to` the accompanying sheet of Vdrawings,and in `which-v;` A y .y Figure 1 is an elevational view of an automobile engine andtheaforwardend'of the automobile chassis showing our improved invention in position;

i Figure. 2 ,is a `vertical sectional y view` through the'body of the priming device;

Figure 3 is a side elevational `view with a partial sectionalvew onlines 33 of Figure4;andv l y cylinders for priming purposes.

Figure 4 is a sectional view on lines 4-4 of F1 re 2. u i

Re erring now specifically to the` drawings, and in which like reference characters refer to like parts throughout, an automobile body 10 is shown having an engine 11 mounted therein having the usual intake 12 secured Y thereto, a carburetor 13 at the lower portion thereof, the carburetor 13 having a feed pipe 14 leading thereto from a vacuum tank15 secured to a dividing wall 16, the said vacuum `tank V15 receiving its supply offuel from the supply tankat the rear ofthe automobile in the usual manner. An` instrument board 17 isprovided upon which the primer 18 is positioned, havin an intake pipe 19 secured thereto and leal ing to a T 20v at the `lower end of the tank 15 and through which fuel is supplied to the `primer 18. A `discharge pipe 21 secured to the primer `18 is provided which leads to connections 22" on the intake 12 and through which fuel is forced into the intake and thence into the i The rimer consistsy of a body member23 prefera ly formed bya die castin of brass or `other suitable material, l and aving a cylindrical chamber 24 inone side thereof with a barrel 25 positioned therein open to the atmosphere at its outer end, the member 23 having an internally threaded" projection 26 `at its lower side within which `a screw threaded nipple 27 is positioned and which is 4connected tothe supply pipe 19, the nipple having a conduit `28 extendingl therethrough with an enlarged chamber 128in the upper (portion thereof, with a ball 29 positione` upon a seat 30 in said ni ple and heldin position by a spring 31-in`t e vchamber 28` and supported at its upper end by a perforate member 32` sothat the ball 29 forms a valve which. revents a return of fuel throughthe supp y pipe 19 from` the `against the instrumentboard 17 andserves to holdthe priming device `18-in position on kthe instrument board. stem 38li`ls ,posilos tioned in the'barrel 25 having a knob` 39 thereon and having a piston head on its inner end composed of a pair of oppositely disposed members 40 and 41 held in position by a nut 42 screw threaded on the inner end of the stem 38. A. longitudinally extending chamber 43 is provided in said member 23 which is internally threaded at its outer' end and closed by a screw 44 positioned therein with a spring 45 pressing against a ball 46 in engagement with a memberl 47 having a conduit 48 therethrough, the conduit 48 and chamber 43 being in alignment with the member and forming an exit assage for said priming fluid as it is forced y the piston out of the barrel 25. A port 49 connects the chamber 43 and the lower portion of a second chamber 50 in said body member 23, a threaded cap 51 being secured to the body member 23 and having a chamber 52 formed therein with a spring 53 seated in said chamber 52 and extending around a stud member 54 having a flattened base 55 which is in engagement with the upper side of a spring diaphragm 56 extending across the chamber 50 and dividing the chamber into upper and lower portions and which is held in normal seated engagement against the inner end of a bushing 57 inserted in the body member 23 and which is screw threaded at its outer end, to which the discharge pipe 21 is secured. The diaphragm 56 has a washer 58 extending circumferentially around its marginal edges at its upper side with a second Washer 59 on the under side thereof, the said 'diaphragm 56 forming a closure member for an exit port 6() extending longitudinall of the member 57 so that the possibility o the engine drawing `gasoline or air into the cylinders isrprevented first by the position of the head 41 being normally positioned between the intake opening 34 and the discharge chamber 43, and secondly bythe position of the diaphragm over the conduit 60, the said diaphragm eing slightcurved so as to obtain proper flexure of l the diaphragm. A port 61 is provided in the upper'portion of the member 51 which leads tothe atmosphere and it will be noted that the suction of the engine serves to draw the `diaphragm into tight engagement with the end of the member `57 which projects outwardly a slight distance from the floor of the chamber 50, so that the greaterV the suction .in the engine the greater is the effective force with which the Vdiaphragm is held in i position and preventing'any possibility of lfezlage of eitherfuel or air into the mani- In the operation of the device, when it is desired to start the engine, particularly in col'd weather, the. operator grasps the handle 39 and pulls the stem 38 out, which causes a supply of fuel to flow through the intake conduit 34 into the barrel 25 of the primer.

y diap Thereupon the piston is pushed forward by the operator, the ball 29 1s forced a ainst the seat 30, the priming fluid being orced outward throu h the member 47 into the chamber 43 an' through the portV 49'` underneath the diaphragm 56, the primin fluid spreading out underneath the diap ragm 56 has the effect ofh draulic action thereon and forces the Vdiap ragm 56 away from the member 57 a kainst the suction of the engine4 andthe-spring 53, and forces the priming fluid outward through thepipe 21 and into the manifold of lthe engine. It will Vthus be understood thatthe forcing of the oi gasoline from the vacuum tank 15 into.k

the engine, and, because of the outer end of the member 25 beingopen` tothe atmosphere as shown in Fig. 2. If there'should be a leakagev through the piston and valves,

i air will be drawn into `the en 'ne'intake'instead of creating afvaenum- 1n the tube 25 which might cause gasoline to -fill the said tube and prevent proper functioning 'ofthe engine. i Y While we have described more or less precisel the details ofconstruction, we do not wis to be understood as'limiting ourselves thereto, as we' contemplate changes in form and the proportion of parts and the substitution of equivalents, as circumstances may suggest or' render expedient without departing from the spirit or scope of our invention. l

We claim: 1. A primer comprising in combination a body member having an intake port and a discharge opening, a. valve controllin said intake vport and a movably mounte piston in vsaid body member, the head of the piston bein positioned between the intake port and t e discharge vopening in the normal closed position of the primer and the body member beingfree to admit air at its `end opposite the discharge opening.

2. A primer comprismg in combination a body lmember having an intake port and a discharge opening, a valve'oontrolling said intake port, a movably mounted piston normally positioned between Ysaid ports and a ragm in said body member controlling' said discharge opening, thasaid diaphragm being adapted to be Seated tightly by the suction of the motor.

3. A primer comprising a body member, a cylindrical member secured thereto, a piston in said cylindrical member, said body member having an intake port and a discharge opening, the said piston being positioned between said openings in normal closed operation of the device, a spring pressed diaphragm adapted to normally close said discharge opening and held in such position by the suction of the motor.

4. A primer comprising in combination a body member having a passage therethrough, and a cliambei therein, a cylindrical member secured'thei'eto and amovably mounted piston in'said cylindrical member, the said body member `having an intake port and a dischargeconduit leading from said chamber, plus a spring pressed diaphagm in the chamber ofthe said body member adapted to control the passage of a iiuid through said body member.

5. A primer comprising in combination a` bodymember having a passage therethrough and an enlarged chamber therein, a discharge intake port being located in V'the side of the cylinder and free of the said piston when the said piston is in normal closed position. y

6. A primer comprising in combination a body member having a passage therethrough and an enlarged chamber therein, a discharge pipe `leading from said chamber, a diaphragm in normal engagement with the end of said discharge pipe, a cylinder member, a piston in said cylinder, the said cylindrical member having an intake port and a discharge port terminating in said chamber, the said piston being positioned between said intake ports and dlscharge ports in normal closed position, and clear of said intake port whereby the said intake port is in free communication with the said cylinder Vwhen the piston is in normal closed position, the said i cylinder'being open at one of its ends, Whereby air may enter said cylinder.

7. A primer for internal combustion en-A gines comprising in combination, a. body member having an inlet port and a discharge port, a diaphragm normally closing said discharge port and adapted to be forced away from said discharge port by fluid forced into `the body member, a cylindrical member secured to said body member having an inlet port and an outlet port, yand a movably mounted'piston in said cylindrical member. 8. A primer comprising in combination a body member having a chamber therein, a discharge pipe leading from said chamber, a diapliragmin normal engagement with the end of said discharge pipe, a cylindrical member, a piston in said cylindrical member, the said cylindrical member having anrintake port and a valve controlling said intake port, the said body member having a passage therethrough leading from said cylindrical member into said chamber at one side thereof whereby the pressure of liquid entering said chamber raises the said diaphragm and .is forced out through said discharge openmg. l 9. A primer comprising in combination a cylinder, an intake pipe secured to saidcylinder intermediate its ends, a discharge pipe leading therefrom, and a movably mounted piston in said cylinder, the head on said pis- `ton being solid and ,positioned between the `intake pipe and discharge pipe in normal closed position of said said inlet port.

l0. A `primer comprising in combination a cylinder open to atmospheric pressure at its rear end, an intake pipe secured to said cylinder intermediate its ends, a discharge pipe leading therefrom, and a movably mounted piston in said cylinder, the Yhead on said piston being between the intake ipe and discharge pipel in normal closed3 position of said piston, and free fromV said intake pipe.

11. A primer comprising in combination a body member, a valve in said body member, connecting means leading to the intake of an internal combustion engine, the said valve being openedV b the pressure built up in the said body mem er and closed by the suction created by the engine. Y

piston, and-free from `signed at chicago, Iliinois, this iethaay of March, 1923.

PETER J. JORGENSEN.

CLARENCE H. J ORGENSEN. 

